Atec Agilent-81618A - Manual (Page 11)

What is an Optical Head? Getting Started with Optical Heads
Agilent 81618A/9A and Agilent 81622B/3B/4B/6B/7B/8B User’s Guide, Second Edition
11
What is an Optical Head?
An optical head measures the power emitted from a connected single-
mode or multi-mode fiber or the power applied in an open parallel
beam (with max. 5 mm diameter). The wavelength and power range
depends on the sensor element.
Figure 1 Rear view of an Optical Head with Analog Output
Figure 2 Front View of Optical Head without Adapter
Figure 1 and Figure 2 show views of a typical optical head. Figure 3
shows two types of adapter that are available for connecting the input
fiber to an optical head.
Figure 3 Connector adapters
Cable to
interface module
Analog output
screw to lock the
connector adapter
when fitted
Optical interface
connector adapter locking screws
Threaded connector adapter D-type magnetic connecter adapter
(preferred)